TY  - BOOK
AU  - Bull LB
AU  - Culvenor CCJ
AU  - Dick AT
TI  - Pyrrolizidine alkaloids: their chemistry, photogenicity and other biological properties
U1  - 547.72 
PY  - 1968///
CY  - Amsterdam
PB  - north-holland
KW  - Alkaloids
ER  -